Synthesis and characterization of iron oxide nanoparticles supported on carbon matrix: oxidation of the dye methylene blue in water

Castro Cínthia Soares de; Gon?alves Maraísa; Guerreiro Mário César; Oliveira Luiz C. A.; Universidade Federal de Lavras Lavras Brasil

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Synthesis and characterization of iron oxide nanoparticles supported on carbon matrix: oxidation of the dye methylene blue in water

机译：碳基质上负载的氧化铁纳米粒子的合成与表征：染料亚甲基蓝在水中的氧化

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In this work were prepared composites of iron oxide and carbonaceous materials in two different weight proportions (Carbon/Fe 1/1 and 1/2). The physico-chemical properties of the composites were determined by temperature programmed reduction (TPR), adsorption/dessorption of N2, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and pulse titration H2. The XRD and XPS analysis showed a cubic iron oxide phase, identified as maghemite, formed over the carbon surface. The particle size of maghemite showed to be within 10-30 nm. Carbon/Fe 1/2 was the most active in MB removal kinetics and ESI-MS studies showed that MB removal by both composites leads to oxidized intermediates.

机译：在这项工作中，制备了两种不同重量比（碳/铁1/1和1/2）的氧化铁和碳质材料的复合材料。复合材料的理化性质由程序升温还原（TPR），N2的吸附/解吸，X射线衍射（XRD），X射线光电子能谱（XPS）和脉冲滴定H2确定。 XRD和XPS分析表明，在碳表面形成了立方氧化铁相，称为磁赤铁矿。磁赤铁矿的粒度显示在10-30nm内。碳/铁1/2在MB去除动力学中最活跃，ESI-MS研究表明，两种复合物去除MB都会导致中间体氧化。

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《Quimica nova》 |2009年第7期|共页
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Castro Cínthia Soares de; Gon?alves Maraísa; Guerreiro Mário César; Oliveira Luiz C. A.; Universidade Federal de Lavras Lavras Brasil;
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机译：碳氧化物负载氧化铁纳米粒子的合成与表征：水中有机亚甲基蓝染料的去除合成和表征碳基质上负载的氧化铁：氧化染料

Synthesis and characterization of iron oxide nanoparticles supported on carbon matrix: oxidation of the dye methylene blue in water

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